Johnson made headlines stateside when he claimed to have taken down several Atlantic City casinos for $15 million in blackjack winnings.

Sources close to the casinos and state gaming regulators have said they believe Johnson really did take down the Jersey card houses for massive profits, in a wild winning streak that goes back to late 2010.

The Bensalem, Pa., resident was in London with Garden State rocker pal Jon Bon Jovi.

Johnson certainly partied like a rock star, splashing fellow club-goers with champagne. And not just any bubbly.

The card whiz was hitting the bottle with a massive, 30-liter jug of Armand De Brignac Midas champagne, which went for $192,036. It’s believed to be the world’s most expensive bottle of bubbly.

The final bill included also included:

* A bottle of Armand De Brignac Methuselah that went for a shocking $40,007.

* A bottle of Dom Perignon for a mere $1,200.

* A magnum of Grey Goose for $672.

* And four Red Bulls for $32.

The bottom line included an automatic 15-percent service charge of $35,902.